user
Task: Find 4 interesting facts about the topic.

Birds


assistant
1. There are approximately 18,000 species of birds on the planet.
2. The Swiftlet has the longest migration of any bird, travelling 11,000 miles each way.
3. Ostriches are the fastest running birds, reaching speeds of up to 43 mph.
4. Of all the animals on Earth, birds have the most highly developed language abilities.